I'm willing to bet he was going to say trichotillomania, an impulse control disorder where the person pulls out hair, eye lashes or other body hair. I think it kind of suits Hanna, plus I knew someone with it in high school.

I've been reading this for a while and I only just learned (from Scary Go Round's guest strips no less) who draws this comic. And then I realised it appears to be nowhere on the main page. Or… anywhere on the site. O_o